How can I use the Android Exoplayer to play videos?

Question

Currently I use the Xamarin MediaManager to play videos: https://github.com/Baseflow/XamarinMediaManager

Is it possible to use the Android Exoplayer instead to play videos? I want to find out if the black screen that appears before a video is played will be the same when I use Android Exoplayer:

https://learn.microsoft.com/en-us/answers/questions/1820407/the-display-of-my-android-device-gets-black-for-a

How can I use the Android Exoplayer to play videos instead of the Xamarin MediaManager?

Acitivity1.cs:

_game = new Game1(this, this.Window);

Game1.cs:

 private Activity1 activity1;    
 private Android.Views.Window window;     

public async void ShowTheVideo()
   {
       VideoDialog customDialog = new VideoDialog(activity1);
       customDialog.SetCancelable(false);
       customDialog.Show();
       await CrossMediaManager.Current.Play("https://videos.pexels.com/video-files/7356431/7356431-hd_1280_720_25fps.mp4");
     
       CrossMediaManager.Current.MediaItemFinished += (s, e) =>
       {
           customDialog.Cancel();
       };
   }

VideoDialog.cs:

using Android.App;
using Android.Views;
using Android.Content;
using Android.Graphics.Drawables;
using Android.OS;
using AndroidX.Core.View;

namespace MyAndroidProject
{
    public class VideoDialog : Dialog
    {
        public VideoDialog(Context context) : base(context)
        {
        }
        protected override void OnCreate(Bundle? savedInstanceState)
        {
            base.OnCreate(savedInstanceState);
         
            Window.RequestFeature(WindowFeatures.NoTitle);
            WindowCompat.SetDecorFitsSystemWindows(Window, false);
            WindowInsetsControllerCompat windowInsetsController = new WindowInsetsControllerCompat(Window, Window.DecorView);
            windowInsetsController.Hide(WindowInsetsCompat.Type.NavigationBars());
            windowInsetsController.SystemBarsBehavior = WindowInsetsControllerCompat.BehaviorShowTransientBarsBySwipe;
            View view = LayoutInflater.From(Context).Inflate(Resource.Layout.Activity_main, null);
            SetContentView(view);
            Window.SetBackgroundDrawable(new ColorDrawable());
            Window.SetLayout(WindowManagerLayoutParams.MatchParent, WindowManagerLayoutParams.MatchParent);
        }
    }
}

Answer 1

Hello,

I want to find out if the black screen that appears before a video is played will be the same when I use Android Exoplayer:

This black screen caused by the following line. If you comment out this line, this black screen will disappear.

SetContentView(_view);

You application need to load the GameView by _view = _game.Services.GetService(typeof(View)) as View;, then set the game view to Activity. But Activity has a default layout when initializing.

We cannot avoid the black screen when you SetContentView(_view). However, we can make the default layout to transparent, when you application start, you will see the transparent view, then black screen appears, you can see your game view in the end .

Firstly, create a styles.xml in the Values folder and make sure the build action is AndroidResouce

Then copy the following style in it. This style is set the default layout to transparent.

<?xml version="1.0" encoding="utf-8" ?>
<resources>
<style name="MainTheme" parent="@android:style/Theme.Holo">
<item name="android:windowIsTranslucent">true</item>
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="android:windowBackground">@android:color/transparent</item>
</style>
</resources>

Next, add the Theme to the [Acitivty] tag.

[Activity(
     Theme = "@style/MainTheme",
     Label = "@string/app_name",
     ....
 
   
)]
public class Activity1 : AndroidGameActivity

If you want to make the Dialog without titlebar. Please change your VideoDialog's constructor like following code.

public VideoDialog(Context context,int themeResId) : base(context, themeResId)
{
     initView(context);
}

When you show your VideoDialog. You can set the no action bar style like following code.

  public async void ShowTheVideo()
  {
 
      VideoDialog customDialog = new VideoDialog(activity1,Android.Resource.Style.ThemeDeviceDefaultDialogNoActionBar);

Best Regards,

Leon Lu

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